Alarm-clock.



W. E. PORTER.

ALARM CLOCK.

APPLICATION run) 0017, 1912.

Patented-Jan. '7, 1913.

UNITED STA'.[ E S PATENT OFFICE.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO NEW HAVEN CLOCK (20., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

ALARM-CLOCK.

Specification of Letters Patent.

' Patented Jan. 7,1 913.

Application filed October 7, 1912. Serial No. 724,430.

To all whom it may concern Be it known that I, WiLsoN E. Pon'rnn, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Alarm- Clocks; and I do hereby declare the following, when taken in connection with the ac co-mpanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in-

Figure 1 a broken view partly in front elevation and partly in vertical section of a clock constructed in accordance with my invention. Fig. 2 a broken view of the clock partly in plan, and partly in horizontal section with the operating knob of the right hand shut-off removed. Fig. 3 a detached view in. side elevation of the inner shell of the case. Fig. 4 a detached view in side elevation of one of the shut-offs. Fig. 5 a view of the shut-off in inside elevation. Fig. 6 an edge View thereof.

My invention relates to an improvement in that class of alarm clocks known to the trade as nickel alarms on account of being cased in cylindrical sheet-metal cases for the most part.- finished with nickel electro-plate, the object of the present invention being to provide such clocks with simple, convenient and reliable alarm shut-offs constructed with particular reference to being used in clocks of the class described having two alarm mechanisms, and therefore known as double alarms. My invention, however, is also adapted to be used in single alarm clocks.

\Vith these ends in view my invention consists in a clock having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

For the illustration of my invention, I have chosen to show it as applied to a double alarm clock in which I employ two sliding sheet-metal shut-offs 2 each consisting of a narrow spring plate and respectively applied directly to the inner face of the inner shell 3 of the clockcase on opposite sides of the stud 4 mounted therein for the reception of the pendant 5 carrying the ring 6. For the attachment of the shutofi's, the shell 3 is formed on opposite sides of the stud 4:, with two keyhole assembling slots 7 and 8 corresponding to each other n size and form, located one above the other in line and each arranged with its circular or assembling-end downward as shown in Fig. 3. The upper end of each shut-off 2 is provided with an outwardly extending stud 9 formed at its inner end with a shouldered rivet 10 by means of which it is mounted in the shut-off from the outer face of which the inner end of the stud is separated by a clearance" space 11 which receives those portions of-thc metal' of the shell 3 lying on opposite-sides of the narrow end of the upper keyhole slot 7, when the shut-01f is in place. The outer ends of each of the studs are formed with a threaded counterbore 9 receiving the threaded stems of operating-buttons l2'the flanges 13 of which are separated, when the buttons are in place, by clearance spaces 14 for the reccption of those portions of metal lying on the opposite sides of slots 15 formed in the outer shell 16 of the case on the opposite sides of an opening 17 formed in the apex of the said shell 16 for the passage through it of the threaded stem 5 of the pendant 5. The said slots 15 register with the narrow ends of the respective keyhole slots 7 and 8.

The lower end of each shut-off 2 is formed with a retaining-stud 18 provided with a shouldered rivet 19 by means of which it is riveted to the shut-off from the outer face of which the inner end of the stud is separated by a clearance space 20 receiving those portions of the metal of the inner shell 3 lying on opposite sides of the narrow inner ends of the keyhole slots 8 thereof. The lower ends of the respective shut-offs are formed with laterally projecting stop-arms 21 which co-act with stop-wires 22 mounted in the verge-arbors 23 of the verges 24 of the two alarm-mechanisms, which need no detailed description as they may be of any approved character. As there are two independent alarm-mechanisms, the time-dial 25 is provided above its center with two alarm-set dials 26 swept by alarm-set hands 27 mounted upon the projecting outer ends of alarm-set arbors 28 projecting rearward through the back of the inner shell 3 and through the bell 29, and furnished at their projecting rear ends with knurled buttons 30.

' The verge arbors 23, before mentioned, are furnished with hammer-tails 31 carrying hammers 32 vibrating in clearance openings 33 in the shell 3 (Fig. 3) and thus striking the bell 29 which encircles and incloses the closed rear portion of the shell 3 as clearly shown in Fig. 2. The operatingarms 21 of the shut-offs co-act with the stopwires 22 so that when the shut-offs are moved into their shutofl" positions they hold the bell hammers 32 out of contact with the bell which is thus left free to sound when either shut-off is moved into its alarm position. In other words, the movement of either shut-oft into its shut-off position, holds the bell hammer out of contact with the bell so that when either shut off is moved into its alarm position, the bell will be free to be sounded to the best advantage. It will be seen by reference to Fig. 2, that the forward edge of the bell 29 telescopes, as it were, within the rear open edge of the outer shell 16 of the case. It will also be seen that the inner shell 3 of the case is completely inclosed, and separated from the bell 29 and the outer shell 16 by an annular space 34 in which the stud 4 is housed, as also shown in the same figure.

The inner shell 3 is provided, as shown in Fig. 3, with studs 35 arranged on opposite sides of the center of its lower portion and provided for the reception of removable peg-like feet 36.

To apply the sliding shutofi's 2, they are introduced into the inner side of the inner shell 3 before the introduction of the clock movement thereinto, and their studs 9 and 18 passed outward through the circular portions of the keyhole slots 7 and 8, after which the shut-offs are sprung and moved inward and upward so as to enter the rivets 10 and 19 of the said studs into the narrow portions of the said keyhole slots. The shut-offs having been placed under tension as described, will therefore be held against free endwise movement by friction. The outer shell '16 and the bell 29 are now assembled, after which the stems of the operatingbuttons 12 are passed through the slots 15 in the shell 16, whereby the sliding movement of the shut-offs is limited, and their studs prevented from being brought into registration with the circular ends of the keyhole slots. Further details of the assemblance of the clock need not be gone into more than to say that the threaded stem of the pendant 5 is passed through the hole 17 into the stud 4: after the outer shell 16 has been placed over the inner shell In the same way the peg-like feet 36 are passed through the outer shell into the studs 9 after the outer shell has been placed over the inner shell 3.

I claim 1. In an alarm-clock, the combination with an inner shell formed with a keyhole slot, of an outer shell formed with a regis tering slot and separated from the said inner shell by an annular space, a sliding shut-oft bearing upon the inner face of the said inner shell and carrying studs the rivets of which pass through the respective keyhole slots, an operating button passing through the outer shell into one of the said studs, a stop-arm located upon the said shut-off, and an alarm mechanism with which the said stop-arm co-acts.

I 2. In a double alarm clock, the combination with an inner shell formed with two keyhole assembling-slots, of an outer shell separated from the said inner shell by an annular space, a flanged bell the flange of which enters the said annular space from the open rear end of the said outer shell, a time-movement located within the said inner shell and having two alarm mecha nisms, two sliding shut-oil's located within the said inner shell, bearing against the inner face thereof, and co-acting with the respective alarm-mechanisms for shutting the same-off, and operating buttons located upon the outer face of the outer shell and connected through the same and through the keyhole slots of the inner shell with the shut-offs for moving the same longitudinally.

In testimony whereof, I have signed this specification in the-presence of two sub-,

scribing witnesses.

WILSON E; PORTER.

lVitnesses:

CLARA L. VVnEn, FREDERIC O. EARLE. 

